US First Lady busts a move with kids

It's official: US First Lady Michelle Obama can move. She's danced to promote iCarly, relishes grooving in public at any given opportunity and yesterday she once again proved she can shake her thing, leading an entire arena in a dance to celebrate the second anniversary of her campaign to lower childhood obesity in the US.

Shake it like you just don't care: Michelle Obama waved her hands and twisted her hips while dancing with 14,000 children. Pic/AFP

The birthday tour of her Let's Move! initiative kicked off in Des Moines, Iowa, where a raucous crowd of 14,000 joined the 48-year-old in dancing the Interlude.

She waved her arms in the air, swung her hips and showed the screaming youngsters how the far-from-complicated dance is done.

Speaking to the packed house, Obama told children, celebrities and state officials, "This is so cool!... Happy birthday, Let's Move!" Her enthusiasm didn't end there.

"I'm proud that you guys are eating your fruits and vegetables, I'm proud that you guys are walking to school instead of taking the bus."